WETS Station : DALECARLIA RESERVOIR DC, DC2325 Creation Date: 08/27/1999 Latitude: 3856 Longitude: 07707 Elevation: 150 State FIPS/County(FIPS): 24001 County Name: District of Columbia Start yr. - 1961 End yr. - 1990 -------------------------------------------------------------------------| | Temperature | Precipitation | | (Degrees F.) | (Inches) | |-----------------------|--------------------------------------| | | | | | 30% chance |avg | | | | | | | will have |# of| avg | |-------|-------|-------| |-----------------|days| total| Month | avg | avg | avg | avg | less | more |w/.1| snow | | daily | daily | | | than | than | or| fall | | max | min | | | | |more| | -------------------------------------------------------------------------| January | 43.0 | 22.9 | 32.9 | 2.95 | 1.96 | 3.53 | 6 | 4.0 | February | 46.8 | 25.7 | 36.2 | 2.99 | 1.95 | 3.59 | 6 | 3.3 | March | 57.7 | 33.5 | 45.6 | 3.52 | 2.63 | 4.11 | 6 | 0.7 | April | 68.0 | 42.1 | 55.1 | 3.55 | 2.30 | 4.27 | 6 | 0.0 | May | 77.3 | 52.3 | 64.8 | 4.19 | 3.03 | 4.94 | 8 | 0.0 | June | 84.9 | 61.2 | 73.0 | 3.60 | 2.22 | 4.35 | 6 | 0.0 | July | 88.3 | 66.0 | 77.2 | 3.89 | 2.59 | 4.66 | 7 | 0.0 | August | 86.8 | 64.8 | 75.8 | 4.29 | 2.42 | 5.22 | 6 | 0.0 | September | 80.5 | 57.8 | 69.2 | 3.58 | 1.79 | 4.38 | 4 | 0.0 | October | 69.7 | 45.1 | 57.4 | 3.50 | 2.05 | 4.26 | 5 | 0.0 | November | 58.6 | 36.3 | 47.4 | 3.50 | 2.19 | 4.23 | 6 | 0.0 | December | 47.4 | 27.3 | 37.3 | 3.42 | 2.01 | 4.16 | 6 | 0.8 | ----------|-------|-------|-------|--------|--------|--------|----|------| ----------|-------|-------|-------|--------|--------|--------|----|------| Annual | ----- | ----- | ----- | ------ | 37.80 | 46.44 | -- | ---- | ----------|-------|-------|-------|--------|--------|--------|----|------| Average | 67.4 | 44.6 | 56.0 | ------ | ------ | ------ | -- | ---- | ----------|-------|-------|-------|--------|--------|--------|----|------| Total | ----- | ----- | ----- | 42.98 | ------ | ------ | 72 | 8.9 | ----------|-------|-------|-------|--------|--------|--------|----|------| -------------------------------------------------------------------------| GROWING SEASON DATES --------------------------------------------------------------------------- | Temperature ---------------------|----------------------------------------------------- Probability | 24 F or higher | 28 F or higher | 32 F or higher | ---------------------|-----------------|-----------------|----------------- | Beginning and Ending Dates | Growing Season Length | 50 percent * | 3/22 to 11/16 | 4/ 6 to 11/ 1 | 4/15 to 10/22 | 239 days | 209 days | 190 days | | | 70 percent * | 3/16 to 11/22 | 4/ 2 to 11/ 5 | 4/12 to 10/25 | 252 days | 218 days | 197 days | | | --------------------------------------------------------------------------- * Percent chance of the growing season occurring between the Beginning and Ending dates. total 1948-1999 prcp Station : MD2325, DALECARLIA RESERVOIR DC ------- Unit = inches yr jan feb mar apr may jun jul aug sep oct nov dec annl ------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- 48 8.19 M3.21 3.10 M6.48 5.07 26.05 49M5.03 3.38 M2.92 M2.36 M5.99 2.03 M4.37 5.49 M3.17 2.98 M0.86 M2.01 40.59 50M1.91 3.07 M4.09 M1.41 6.59 5.07 M5.24 4.50 6.08 4.44 3.38 M1.64 47.42 51 1.34 2.86 3.91 3.61 2.26 8.84 M2.92 1.46 0.70 1.30 6.20 5.67 41.07 52 4.40 2.02 5.31 9.32 5.54 2.05 4.26 3.76 3.50 0.89 6.14 3.04 50.23 53 4.09 2.23 5.97 3.74 M6.62 M1.84 3.49 2.08 4.42 2.20 M1.44 4.05 42.17 54 2.19 1.19 M2.96 3.06 2.85 2.20 2.43 5.98 1.18 4.42 1.76 2.74 32.96 55 0.27 3.75 4.00 2.86 2.48 5.26 2.03M13.82 0.40 5.63 1.73 0.26 42.49 56 2.83 3.49 4.43 2.45 2.20 3.24 9.20 2.39 5.10 3.73 2.33 3.42 44.81 57 2.91 3.12 M2.62 3.28 2.54 2.51 1.77 2.47 6.08 3.07 2.65 6.51 39.53 58 3.99 4.27 5.52 4.96 1.90 3.96 9.12 6.76 1.44 2.32 2.03 1.83 48.10 59 2.78 2.02 2.97 4.29 2.24 3.13 5.48 2.69 2.07 4.75 2.77 2.85 38.04 60 2.18 4.35 2.12 3.52 6.47 2.26 M3.99 3.75 4.90 1.77 M0.98 M0.91 37.20 61M3.04 4.90 3.92 4.78 3.43 4.42 2.46 6.58 1.15 3.28 M1.65 3.83 43.44 62 1.87 3.46 3.52 2.84 3.46 4.17 2.72 0.49 3.10 1.29 5.59 3.00 35.51 63 1.43 2.40 4.95 1.51 1.54 6.49 0.97 5.70 3.39 0.08 6.52 1.56 36.54 64 3.49 3.18 2.82 2.27 1.16 1.89 2.27 3.85 1.88 1.95 2.55 27.31 65 2.88 1.46 4.69 M1.41 2.03 1.50 4.73 3.30 0.36 5.99 1.08 0.41 29.84 66 4.30 3.97 1.54 5.00 3.68 0.85 1.25 1.49 9.60 4.73 1.74 3.34 41.49 67 1.07 2.38 4.66 1.39 4.34 1.79 4.39 9.65 0.62 3.00 2.69 6.12 42.10 68 3.21 0.59 4.81 1.40 5.87 5.71 1.47 3.79 3.72 2.86 4.54 2.12 40.09 69 2.55 3.13 1.64 1.86 2.06 4.04 6.25 8.05 2.09 1.61 6.94 40.22 70 1.32 3.40 2.99 5.94 1.79 3.06 6.37 1.32 1.00 3.91 6.03 4.36 41.49 71 2.37 6.16 2.34 3.10 8.60 1.61 5.05 5.76 4.84 6.29 3.86 1.86 51.84 72 3.17 6.60 3.02 6.09 4.49 12.78 3.06 1.90 2.00 4.60 7.44 5.92 61.07 73 2.75 3.21 4.72 6.81 4.06 2.70 4.09 4.22 2.81 1.83 1.51 5.76 44.47 74 4.40 1.64 4.41 3.99 3.87 3.89 1.39 4.36 4.74 1.15 M1.34 5.97 41.15 75 3.11 2.39 5.49 2.66 5.11 1.84 9.59 6.64 11.61 2.86 2.20 4.11 57.61 76 5.24 2.00 2.66 2.92 4.82 2.40 5.33 3.86 5.82 7.17 0.85 2.24 45.31 77 1.38 0.67 3.22 2.43 2.45 5.64 3.03 5.43 0.70 5.99 5.68 5.79 42.41 78 6.95 0.63 4.32 1.47 5.63 3.51 4.21 5.63 0.92 1.07 2.42 3.88 40.64 79 7.34 5.39 3.50 2.45 4.26 4.47 3.95 6.84 8.53 6.19 2.60 1.04 56.56 80M2.53 1.07 4.78 M4.73 M3.58 M1.45 M3.32 3.50 1.75 3.05 3.12 0.76 33.64 81 0.47 3.61 1.31 2.46 3.89 2.99 5.99 4.11 2.79 3.05 0.54 1.98 33.19 82 2.87 M3.97 2.54 4.41 2.51 5.69 3.70 4.21 2.76 2.05 3.54 1.88 40.13 83 1.69 3.66 5.51 8.55 4.92 7.10 1.64 2.49 3.37 5.93 5.32 6.64 56.82 84 1.20 3.98 6.51 4.42 6.06 1.76 6.19 3.69 2.29 3.48 1.42 41.00 85 1.57 3.41 1.96 0.35 5.87 1.93 3.10 1.65 7.05 3.61 5.63 0.81 36.94 86 2.19 M3.41 1.01 3.30 1.41 1.59 4.30 8.74 0.78 1.79 5.63 6.58 40.73 87 3.62 1.26 2.54 3.35 2.96 3.46 1.15 0.98 8.17 2.70 4.03 2.41 36.63 88 2.57 2.65 2.79 1.94 5.39 1.26 3.37 3.81 1.81 1.91 5.32 1.05 33.87 89 2.82 3.01 4.20 4.26 9.41 5.59 6.78 0.24 4.51 5.56 2.90 3.17 52.45 90 5.06 2.03 3.17 4.97 5.88 3.08 4.96 7.97 1.40 6.17 2.38 5.15 52.22 91 3.37 1.22 5.65 2.01 1.63 2.16 7.91 1.51 4.28 3.00 1.42 5.10 39.26 92 2.97 2.73 4.31 2.88 4.11 1.71 6.87 4.40 5.83 2.28 4.97 4.33 47.39 93 3.14 2.39 7.31 4.84 M4.67 2.84 3.59 4.28 4.76 2.47 6.34 M4.44 51.07 94 4.54 4.14 8.20 1.75 2.87 5.17 5.86 2.89 2.54 2.05 2.52 2.93 45.46 95 3.07 M1.16 1.40 1.56 5.65 4.08 1.54 M4.36 6.09 M4.34 1.75 35.00 96 7.36 2.87 3.84 3.92 5.88 4.68 5.77 3.00 8.12 5.04 2.32 M5.29 58.09 97M1.53 2.84 4.20 2.29 3.81 3.61 M2.15 3.95 2.64 3.35 5.54 2.46 38.37 98 5.80 6.65 6.10 4.20 5.28 4.07 2.41 1.87 2.03 1.08 1.41 2.11 43.01 99 ---------- WETS Station : NATIONAL ARBORETUM DC, DC6350 Creation Date: 08/27/1999 Latitude: 3854 Longitude: 07658 Elevation: 50 State FIPS/County(FIPS): 24001 County Name: District of Columbia Start yr. - 1961 End yr. - 1990 -------------------------------------------------------------------------| | Temperature | Precipitation | | (Degrees F.) | (Inches) | |-----------------------|--------------------------------------| | | | | | 30% chance |avg | | | | | | | will have |# of| avg | |-------|-------|-------| |-----------------|days| total| Month | avg | avg | avg | avg | less | more |w/.1| snow | | daily | daily | | | than | than | or| fall | | max | min | | | | |more| | -------------------------------------------------------------------------| January | 42.5 | 23.9 | 33.2 | 3.12 | 2.10 | 3.73 | 6 | 6.9 | February | 45.8 | 26.1 | 36.0 | 3.01 | 1.65 | 3.67 | 6 | 6.3 | March | 56.5 | 34.4 | 45.5 | 3.30 | 2.42 | 3.87 | 6 | 1.6 | April | 66.4 | 43.0 | 54.7 | 3.27 | 2.02 | 3.96 | 6 | 0.1 | May | 76.2 | 52.7 | 64.4 | 4.17 | 2.93 | 4.96 | 7 | 0.0 | June | 84.2 | 61.8 | 73.0 | 3.80 | 2.38 | 4.59 | 6 | 0.0 | July | 87.9 | 66.5 | 77.2 | 4.38 | 2.74 | 5.30 | 6 | 0.0 | August | 86.7 | 65.0 | 75.9 | 4.39 | 2.71 | 5.32 | 6 | 0.0 | September | 80.4 | 57.5 | 68.9 | 3.60 | 1.85 | 4.39 | 4 | 0.0 | October | 69.4 | 45.4 | 57.4 | 3.28 | 2.29 | 3.97 | 5 | 0.0 | November | 58.4 | 37.3 | 47.9 | 3.42 | 2.06 | 4.14 | 5 | 0.9 | December | 47.1 | 28.6 | 37.8 | 3.29 | 1.94 | 3.99 | 5 | 2.7 | ----------|-------|-------|-------|--------|--------|--------|----|------| ----------|-------|-------|-------|--------|--------|--------|----|------| Annual | ----- | ----- | ----- | ------ | 38.90 | 46.16 | -- | ---- | ----------|-------|-------|-------|--------|--------|--------|----|------| Average | 66.8 | 45.2 | 56.0 | ------ | ------ | ------ | -- | ---- | ----------|-------|-------|-------|--------|--------|--------|----|------| Total | ----- | ----- | ----- | 43.03 | ------ | ------ | 68 | 18.6 | ----------|-------|-------|-------|--------|--------|--------|----|------| -------------------------------------------------------------------------| GROWING SEASON DATES --------------------------------------------------------------------------- | Temperature ---------------------|----------------------------------------------------- Probability | 24 F or higher | 28 F or higher | 32 F or higher | ---------------------|-----------------|-----------------|----------------- | Beginning and Ending Dates | Growing Season Length | 50 percent * | 3/17 to 11/22 | 3/31 to 11/ 6 | 4/10 to 10/26 | 250 days | 220 days | 198 days | | | 70 percent * | 3/11 to 11/28 | 3/25 to 11/11 | 4/ 6 to 10/30 | 262 days | 231 days | 207 days | | | --------------------------------------------------------------------------- * Percent chance of the growing season occurring between the Beginning and Ending dates. total 1948-1999 prcp Station : MD6350, NATIONAL ARBORETUM DC ------- Unit = inches yr jan feb mar apr may jun jul aug sep oct nov dec annl ------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- 48 9.70 4.14 3.24 5.73 5.35 28.16 49 5.20 3.24 3.01 2.60 5.52 2.30 3.08 4.03 4.15 3.36 0.80 1.77 39.06 50 2.08 2.65 3.88 1.77 4.77 3.38 6.99 7.17 8.14 3.12 2.78 3.15 49.88 51 2.42 2.68 3.00 3.57 2.85M11.14 3.20 3.26 3.04 1.57 4.17 3.41 44.31 52 4.76 2.02 M3.98 M7.68 5.65 3.55 4.66 8.67 M3.76 M0.23 6.46 M2.72 54.14 53 4.71 2.39 2.77 1.91 3.18 M3.54 3.66 1.67 M1.91 25.74 54M1.38 0.90 3.83 3.66 M4.60 2.50 2.39 4.38 0.72 3.86 2.04 3.05 33.31 55 0.34 M3.45 3.84 2.68 2.64 M3.17 M3.83 14.43 0.82 6.62 1.56 0.25 43.63 56M2.62 3.11 M4.22 2.29 1.72 3.42 M4.74 1.74 3.93 3.43 4.51 3.36 39.09 57 2.95 2.82 1.77 2.77 2.13 3.28 0.58 2.41 4.06 2.63 2.64 M2.77 30.81 58 3.08 M4.43 7.59 4.88 3.23 3.22 7.54 7.33 2.51 2.69 2.31 1.64 50.45 59M2.33 1.83 2.51 5.14 3.36 4.21 4.12 5.22 1.18 3.53 2.43 3.50 39.36 60 2.93 3.68 M2.36 3.29 4.86 2.31 5.10 6.01 5.76 2.23 1.06 2.98 42.57 61M2.94 M5.27 3.97 4.28 2.68 4.00 5.43 7.53 0.55 2.93 1.98 M1.95 43.51 62M1.22 3.85 4.77 3.52 4.29 3.42 1.58 0.65 3.09 2.12 4.88 3.41 36.80 63 1.43 2.39 5.81 1.33 1.27 7.86 0.95 8.35 3.79 0.00 8.17 2.26 43.61 64 4.58 3.80 2.56 4.76 1.17 1.63 1.82 1.84 4.25 1.72 2.09 2.79 33.01 65 2.99 2.08 4.72 1.94 1.89 1.29 3.74 4.84 2.43 2.06 0.60 0.46 29.04 66 4.65 3.81 1.21 4.10 3.82 2.55 0.83 1.36 8.28 5.25 1.70 3.78 41.34 67 1.54 3.01 4.26 1.50 4.86 1.65 4.89 9.08 0.76 2.25 2.63 6.05 42.48 68 2.53 0.76 4.67 1.75 4.97 5.72 2.83 4.84 3.12 3.35 4.11 2.45 41.10 69 1.89 2.41 1.77 2.00 1.83 4.91 9.37 6.66 3.41 1.21 2.37 8.04 45.87 70 1.65 3.01 3.11 5.42 3.73 3.76 8.44 2.16 1.69 2.65 5.66 3.17 44.45 71 2.29 5.94 2.27 1.87 7.90 2.72 5.00 7.63 2.59 6.78 3.75 2.24 50.98 72 2.47 6.49 2.83 4.29 5.46 12.77 2.34 3.29 1.09 3.73 6.88 M4.99 56.63 73 2.75 3.03 3.30 6.03 2.82 3.89 3.53 5.30 1.77 2.05 1.33 6.29 42.09 74 3.70 1.27 4.68 2.74 3.83 4.57 1.06 7.14 5.22 1.21 1.20 6.00 42.62 75 3.05 1.84 6.19 2.61 4.44 1.79 11.03 4.40 13.72 2.69 2.27 2.39 56.42 76 6.33 1.65 1.74 2.41 4.78 2.13 6.76 2.42 7.44 8.16 0.65 1.91 46.38 77 1.30 0.63 2.72 2.34 3.52 4.10 3.35 3.49 0.45 5.54 4.90 5.69 38.03 78 7.58 0.33 4.15 1.38 6.67 2.61 M4.26 5.53 0.97 1.29 2.74 3.85 41.36 79 7.16 5.78 2.61 2.84 3.97 5.27 4.64 6.96 9.34 5.99 2.76 0.91 58.23 80 3.35 M0.86 3.84 4.03 2.38 M6.19 2.92 2.21 3.12 M2.60 0.73 32.23 81 0.49 3.42 1.68 2.81 4.61 2.74 4.66 3.63 2.33 3.52 0.51 2.45 32.85 82 3.60 3.50 2.57 M4.18 4.23 5.55 3.49 2.03 2.13 2.06 3.35 1.97 38.66 83 1.73 M2.84 4.32 7.45 M4.80 5.04 1.01 M4.41 2.64 5.66 5.29 6.61 51.80 84 1.81 4.19 6.06 3.43 4.65 0.95 5.86 3.12 1.73 3.03 3.75 1.43 40.01 85 3.02 3.02 1.87 0.05 M5.42 3.01 2.95 3.81 5.56 3.48 M5.43 1.55 39.17 86 3.18 M3.74 1.36 3.46 0.90 2.84 5.02 4.86 1.47 2.12 5.82 5.20 39.97 87M4.31 M0.12 1.61 4.24 2.21 4.30 5.52 2.91 6.30 3.25 3.69 2.53 40.99 88M3.23 3.97 2.49 3.16 5.43 0.51 5.09 3.57 1.83 2.82 5.79 1.27 39.16 89 2.53 6.06 M3.49 3.96 8.49 7.02 M5.97 0.32 6.08 5.11 0.83 49.86 90 4.27 1.31 M2.84 4.45 6.56 3.03 3.94 6.74 1.66 M3.18 2.14 5.40 45.52 91 3.14 0.83 5.43 1.74 M0.91 1.33 3.92 2.11 3.88 2.68 1.06 5.33 32.36 92 1.93 M2.81 4.16 3.06 3.76 1.81 3.97 3.14 4.14 1.85 4.14 3.58 38.35 93 3.02 2.36 M8.10 4.58 2.83 2.16 2.73 4.53 4.91 2.95 M5.39 4.32 47.88 94 3.39 M3.64 M8.45 2.12 M2.25 2.92 5.59 5.30 3.56 1.59 M1.47 2.17 42.45 95 3.94 1.55 2.60 M1.52 6.35 3.02 3.79 1.64 24.41 96 6.32 M2.21 3.83 3.13 5.31 4.17 5.27 2.95 7.46 4.90 3.79 5.63 54.97 97 2.51 2.47 4.58 2.81 4.52 4.03 2.21 3.05 2.16 4.04 6.19 1.89 40.46 98 5.62 5.40 7.44 4.17 4.36 4.76 1.81 1.02 2.17 0.81 1.13 1.94 40.63 99 ----------